[Paraview] [EXTERNAL] Re: Bug in contour filter for version 3.12 not present in 3.10

[Russell M. Taylor II]

It turns out that the contour is computing scalars for all of the 
scalars except the one that it contoured on.  If you only make one 
contour, then you might say that this is not an issue, but when you 
make multiple contours with the same filter you may want to color 
them by the value used to make the contour.  In version 3.10, it 
would also compute the scalar for the value you contoured by when you 
clicked the button.

So I guess the bug is that 3.12 does not pass through the scalar 
value for the scalar you contoured by.  If it did that, then we'd not 
need to push the button.

Thanks,
Russ

At 05:45 PM 1/30/2012, Moreland, Kenneth wrote:
>I believe this change is intentional.  When you run the clip filter, it
>turns the data set into an unstructured grid.  The unstructured version of
>contour always computes scalars, so that checkbox has no effect.  To
>demonstrate that the checkbox has no effect, it is now grayed out.
>
>
>-Ken
>
>On 1/30/12 2:17 PM, "David E DeMarle" <dave.demarle at kitware.com> wrote:
>
> >I see it too. I'll add it to the bug tracker.
> >
> >David E DeMarle
> >Kitware, Inc.
> >R&D Engineer
> >21 Corporate Drive
> >Clifton Park, NY 12065-8662
> >Phone: 518-881-4909
> >
> >
> >
> >On Fri, Jan 27, 2012 at 4:42 PM, Russell M. Taylor II
> ><taylorr at cs.unc.edu> wrote:
> >> Paraview 3.12 doesn't let me check the "Compute Scalars" box, it is
> >>grayed
> >> out, in some circumstances.
> >>
> >> Sources/Wavelet
> >> FIlters/Clip
> >> Filter/Contour
> >>
> >> The above sequence will give you the situation I am talking about.
> >>Version
> >> 3.10 of Paraview and earlier let you compute scalars.  If you can't,
> >>then
> >> you can't color by the scalar value (this is useful in the case of
> >>multiple
> >> contours).
> >>
> >>
> >> ---
> >> Russell M. Taylor II, Ph.D.                           taylorr at cs.unc.edu
> >> CB #3175, Sitterson Hall                        www.cs.unc.edu/~taylorr
> >> University of North Carolina,                     Voice: (919) 962-1701
> >> Chapel Hill, NC 27599-3175                        FAX:   (919) 962-1799
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---
Russell M. Taylor II, Ph.D.                           taylorr at cs.unc.edu
CB #3175, Sitterson Hall                        www.cs.unc.edu/~taylorr
University of North Carolina,                     Voice: (919) 962-1701
Chapel Hill, NC 27599-3175                        FAX:   (919) 962-1799